package LeetCode_72;

public class Solution {
    public static int minDistance(String word1, String word2) {
        if (word1.equals(word2)) {
            return 0;
        }
        int[][] dp = new int[word1.length() + 1][word2.length() + 1];
        for (int i = 1; i <= word1.length(); i++) {
            dp[i][0] = i;
        }
        for (int i = 1; i <= word2.length(); i++) {
            dp[0][i] = i;
        }

        for (int i = 1; i <= word1.length(); i++) {
            for (int j = 1; j <= word2.length(); j++) {
                if (word1.charAt(i - 1) == word2.charAt(j - 1)) {
                    dp[i][j] = dp[i - 1][j - 1];
                } else {
                    dp[i][j] = Math.min(dp[i - 1][j] + 1, Math.min(dp[i][j - 1] + 1, dp[i - 1][j - 1] + 1));
                }
            }
        }
        return dp[word1.length()][word2.length()];
    }

    public static void main(String[] args) {
        String A = "aaa";
        String B = "aas";
        System.out.println(minDistance(A,B));
        System.out.printf("test");
    }
}
